The Solomon Islands sits on the Pacific Ring of Fire, a arc along the Pacific Ocean rim where many volcanic erupts.

The earthquake was initially classed as an 8.0 magnitude quake by the U.S. Geological Service but has since been reduced to a 7.8 on the Moment-Magnitude scale, according to the Washington Post.

A 6.3-magnitude earthquake hit the Solomon Islands on Monday, the US Geological Survey said, but no tsunami warning was issued. The powerful quake struck just after 4 pm (0500 GMT) at a depth of 17.7 ...